(AP) — A powerful winter storm was dumping deep snow in parts of the West on Monday and much of the central U.S. was unseasonably warm: People played golf in Wisconsin and comfortably walked their dogs in Iowa, where some bulbs were starting to flower. And high winds hiked fire risks in several states.
Why was it happening? Three things explained the weird weather in much of the U.S.
THE JET STREAM
T…
